The emergence of symbolic culture, classically identified with the European cave paintings of the Ice Age, is now seen, in the light of recent groundbreaking discoveries, as a complex nonlinear process taking root in a remote past and in different regions of the planet. In this book the archaeologists responsible for some of these new discoveries, flanked by ethologists interested in primate cognition and cultural transmission, evolutionary psychologists modelling the emergence of metarepresentations, as well as biologists, philosophers, neuro- scientists and an astronomer combine their research findings. Their results call into question our very conception of human nature and animal behaviour, and they create epistemological bridges between disciplines that build the foundations for a novel vision of our lineage's cultural trajectory and the processes that have led to the emergence of human societies as we know them.